Abstract: An arc welding device, having a simple structure, in which a welding torch does not interfere with external equipment. A Y-shaped torch cable includes first and second wire liners and a junction block having a Y-shaped liner section having two inlets connected to the wire liners and one outlet. A welding wire selectively fed from one of two wire feeders extends in the first or second wire liner and reaches the outlet of the liner section. Therefore, as one of plural kinds of welding wires may be selected and fed to a single-electrode welding torch, the plurality of welding wires being used for welding, nevertheless the welding torch does not interfere with external equipment.

Abstract: A robot base 15 is installed on a ceiling 100, and a first wrist element 11 is attached to a front arm base 10 to be rotatable about a first axis A. A second wrist element 12 is attached to the first wrist element 11 to be rotatable about a second axis B, and a welding torch 2 is supported via a transmission mechanism 13 to be rotatable about an offset axis C. The welding torch 2 is attached so that a tip end thereof is directed downward in the illustrated posture of the robot. A linear guide 6a and a slider 7 are provided via a support base 5, and an intermediate portion of a torch cable 3 (or a welding wire delivery device 4) is fixed thereto to draw a tensioning device 80. Such a structure is applicable to a wall-hanging type robot.

Abstract: A laser processing robot including a manipulator; a laser processing tool attached to the manipulator; an optical fiber for transmitting a laser beam to the laser processing tool; and a line passage formed inside the arm section to accommodate the optical fiber. The arm section includes a first member disposed fixedly about a first control axis and a second member supported on the first member rotatably about the first control axis. The line passage is formed continuously within the first and second members, an optical fiber inlet port thereof being provided in the first member and an optical fiber outlet port thereof being provided in the wrist portion.

Abstract: A first wrist element 11 is rotatably provided around an axis line A, on the front end of a forearm base 10 of a robot 1. A second wrist element 12 is rotatably provided around a second axis line B, on the first wrist element 11. A welding torch 2 is rotatably supported around a line C via a transmission mechanism 13. The third axis line C is disposed approximately perpendicularly to the axis line B and is remote from the axis line A by a predetermined distance. A wire feeder 4 is disposed at a position (on a mounting table 8, an upper arm, or a rotating body) other than a forearm. A torch cable 3 is fitted to a slider 6b that is movably fitted along a direction approximately parallel with the first axis line A, with an intermediate fitting section 3a. A slider 6b can be pulled backward by returning a wire 81 connected to a tension generator 80 using a pulley 82.

Abstract: A cable laying structure for a robot, which does not interfere with external devices in a periphery of a forearm. Camera (or force sensor) and hand control cables and motor control cables CB are drawn into a robot mechanism through a connection panel of a base of a robot main body. While allowing the motor control cables to sequentially diverge, the control cables CB are arranged in a robot arm along an upper arm portion and guided to the forearm. The control cables CB are introduced into the forearm with a shield and a sheath removed, and clamped at an appropriate position. After reaching an end effector-mounting face, the control cables CB are connected to a camera (or force sensor) C/S and a hand. The forearm is formed of conductive material and grounded on the base of the robot main body so as to have the same electric potential as the base by using means such as an earth cable or the like, and therefore the forearm is utilized in replacement of the shield.

Abstract: A robot main unit comprises a linear movement arm (3) on a column (2) fixed onto an installation surface 1, first and second rotating arms (4, 5), a tool attachment section (6a) and an arm-to-arm coupling member (13), and the like. The coupling member (13) is designed to have a sufficient interval (13a) between the arms, thereby preventing accumulation of foreign matter and making washing easier. Piping and wiring members (7) for the working tool (6b) are passed through the interior of the robot main unit, thereby increasing ease of washing in the region from the third axis onwards, where fragments of foodstuffs, and the like, are liable to become attached to the robot.